From 01178567ebc428fcf8eb53a62b5ca9c449980491 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Thu, 24 Apr 2003 06:19:54 +0000 Subject: Remove more gamma DMA code. This isn't all of it, but it's a major portion. --- bsd-core/drm_context.c | 348 +------------------------------------------------ 1 file changed, 3 insertions(+), 345 deletions(-) (limited to 'bsd-core/drm_context.c') diff --git a/bsd-core/drm_context.c b/bsd-core/drm_context.c index c7823ac1..2293a806 100644 --- a/bsd-core/drm_context.c +++ b/bsd-core/drm_context.c @@ -32,7 +32,9 @@ #include "drmP.h" -#if __HAVE_CTX_BITMAP +#if !__HAVE_CTX_BITMAP +#error "__HAVE_CTX_BITMAP must be defined" +#endif /* ================================================================ * Context bitmap support @@ -345,347 +347,3 @@ int DRM(rmctx)( DRM_IOCTL_ARGS ) return 0; } - - -#else /* __HAVE_CTX_BITMAP */ - -/* ================================================================ - * Old-style context support - */ - - -int DRM(context_switch)(drm_device_t *dev, int old, int new) -{ - drm_queue_t *q; - -#if 0 - atomic_inc(&dev->total_ctx); -#endif - - if (test_and_set_bit(0, &dev->context_flag)) { - DRM_ERROR("Reentering -- FIXME\n"); - return DRM_ERR(EBUSY); - } - - DRM_DEBUG("Context switch from %d to %d\n", old, new); - - if (new >= dev->queue_count) { - clear_bit(0, &dev->context_flag); - return DRM_ERR(EINVAL); - } - - if (new == dev->last_context) { - clear_bit(0, &dev->context_flag); - return 0; - } - - q = dev->queuelist[new]; - atomic_inc(&q->use_count); - if (atomic_read(&q->use_count) == 1) { - atomic_dec(&q->use_count); - clear_bit(0, &dev->context_flag); - return DRM_ERR(EINVAL); - } - - atomic_dec(&q->use_count); - - return 0; -} - -int DRM(context_switch_complete)(drm_device_t *dev, int new) -{ - drm_device_dma_t *dma = dev->dma; - - dev->last_context = new; /* PRE/POST: This is the _only_ writer. */ - dev->last_switch = jiffies; - - if (!_DRM_LOCK_IS_HELD(dev->lock.hw_lock->lock)) { - DRM_ERROR("Lock isn't held after context switch\n"); - } - - if (!dma || !(dma->next_buffer && dma->next_buffer->while_locked)) { - if (DRM(lock_free)(dev, &dev->lock.hw_lock->lock, - DRM_KERNEL_CONTEXT)) { - DRM_ERROR("Cannot free lock\n"); - } - } - - clear_bit(0, &dev->context_flag); - DRM_WAKEUP_INT(&dev->context_wait); - - return 0; -} - -static int DRM(init_queue)(drm_device_t *dev, drm_queue_t *q, drm_ctx_t *ctx) -{ - DRM_DEBUG("\n"); - - if (atomic_read(&q->use_count) != 1 - || atomic_read(&q->finalization) - || atomic_read(&q->block_count)) { - DRM_ERROR("New queue is already in use: u%ld f%ld b%ld\n", - (unsigned long)atomic_read(&q->use_count), - (unsigned long)atomic_read(&q->finalization), - (unsigned long)atomic_read(&q->block_count)); - } - - atomic_set(&q->finalization, 0); - atomic_set(&q->block_count, 0); - atomic_set(&q->block_read, 0); - atomic_set(&q->block_write, 0); - atomic_set(&q->total_queued, 0); - atomic_set(&q->total_flushed, 0); - atomic_set(&q->total_locks, 0); - - q->write_queue = 0; - q->read_queue = 0; - q->flush_queue = 0; - - q->flags = ctx->flags; - - DRM(waitlist_create)(&q->waitlist, dev->dma->buf_count); - - return 0; -} - - -/* drm_alloc_queue: -PRE: 1) dev->queuelist[0..dev->queue_count] is allocated and will not - disappear (so all deallocation must be done after IOCTLs are off) - 2) dev->queue_count < dev->queue_slots - 3) dev->queuelist[i].use_count == 0 and - dev->queuelist[i].finalization == 0 if i not in use -POST: 1) dev->queuelist[i].use_count == 1 - 2) dev->queue_count < dev->queue_slots */ - -static int DRM(alloc_queue)(drm_device_t *dev) -{ - int i; - drm_queue_t *queue; - int oldslots; - int newslots; - /* Check for a free queue */ - for (i = 0; i < dev->queue_count; i++) { - atomic_inc(&dev->queuelist[i]->use_count); - if (atomic_read(&dev->queuelist[i]->use_count) == 1 - && !atomic_read(&dev->queuelist[i]->finalization)) { - DRM_DEBUG("%d (free)\n", i); - return i; - } - atomic_dec(&dev->queuelist[i]->use_count); - } - /* Allocate a new queue */ - DRM_LOCK; - - queue = gamma_alloc(sizeof(*queue), DRM_MEM_QUEUES); - memset(queue, 0, sizeof(*queue)); - atomic_set(&queue->use_count, 1); - - ++dev->queue_count; - if (dev->queue_count >= dev->queue_slots) { - oldslots = dev->queue_slots * sizeof(*dev->queuelist); - if (!dev->queue_slots) dev->queue_slots = 1; - dev->queue_slots *= 2; - newslots = dev->queue_slots * sizeof(*dev->queuelist); - - dev->queuelist = DRM(realloc)(dev->queuelist, - oldslots, - newslots, - DRM_MEM_QUEUES); - if (!dev->queuelist) { - DRM_UNLOCK; - DRM_DEBUG("out of memory\n"); - return DRM_ERR(ENOMEM); - } - } - dev->queuelist[dev->queue_count-1] = queue; - - DRM_UNLOCK; - DRM_DEBUG("%d (new)\n", dev->queue_count - 1); - return dev->queue_count - 1; -} - -int DRM(resctx)( DRM_IOCTL_ARGS ) -{ - drm_ctx_res_t res; - drm_ctx_t ctx; - int i; - - DRM_DEBUG("%d\n", DRM_RESERVED_CONTEXTS); - - DRM_COPY_FROM_USER_IOCTL( res, (drm_ctx_res_t *)data, sizeof(res) ); - - if (res.count >= DRM_RESERVED_CONTEXTS) { - memset(&ctx, 0, sizeof(ctx)); - for (i = 0; i < DRM_RESERVED_CONTEXTS; i++) { - ctx.handle = i; - if (DRM_COPY_TO_USER(&res.contexts[i], - &i, - sizeof(i))) - return DRM_ERR(EFAULT); - } - } - res.count = DRM_RESERVED_CONTEXTS; - - DRM_COPY_TO_USER_IOCTL( (drm_ctx_res_t *)data, res, sizeof(res) ); - - return 0; -} - -int DRM(addctx)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_ctx_t ctx; - - DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) ); - - if ((ctx.handle = DRM(alloc_queue)(dev)) == DRM_KERNEL_CONTEXT) { - /* Init kernel's context and get a new one. */ - DRM(init_queue)(dev, dev->queuelist[ctx.handle], &ctx); - ctx.handle = DRM(alloc_queue)(dev); - } - DRM(init_queue)(dev, dev->queuelist[ctx.handle], &ctx); - DRM_DEBUG("%d\n", ctx.handle); - - DRM_COPY_TO_USER_IOCTL( (drm_ctx_t *)data, ctx, sizeof(ctx) ); - - return 0; -} - -int DRM(modctx)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_ctx_t ctx; - drm_queue_t *q; - - DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) ); - - DRM_DEBUG("%d\n", ctx.handle); - - if (ctx.handle < 0 || ctx.handle >= dev->queue_count) - return DRM_ERR(EINVAL); - q = dev->queuelist[ctx.handle]; - - atomic_inc(&q->use_count); - if (atomic_read(&q->use_count) == 1) { - /* No longer in use */ - atomic_dec(&q->use_count); - return DRM_ERR(EINVAL); - } - - if (DRM_BUFCOUNT(&q->waitlist)) { - atomic_dec(&q->use_count); - return DRM_ERR(EBUSY); - } - - q->flags = ctx.flags; - - atomic_dec(&q->use_count); - return 0; -} - -int DRM(getctx)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_ctx_t ctx; - drm_queue_t *q; - - DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) ); - - DRM_DEBUG("%d\n", ctx.handle); - - if (ctx.handle >= dev->queue_count) - return DRM_ERR(EINVAL); - q = dev->queuelist[ctx.handle]; - - atomic_inc(&q->use_count); - if (atomic_read(&q->use_count) == 1) { - /* No longer in use */ - atomic_dec(&q->use_count); - return DRM_ERR(EINVAL); - } - - ctx.flags = q->flags; - atomic_dec(&q->use_count); - - DRM_COPY_TO_USER_IOCTL( (drm_ctx_t *)data, ctx, sizeof(ctx) ); - - return 0; -} - -int DRM(switchctx)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_ctx_t ctx; - - DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) ); - - DRM_DEBUG("%d\n", ctx.handle); - return DRM(context_switch)(dev, dev->last_context, ctx.handle); -} - -int DRM(newctx)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_ctx_t ctx; - - DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) ); - - DRM_DEBUG("%d\n", ctx.handle); - DRM(context_switch_complete)(dev, ctx.handle); - - return 0; -} - -int DRM(rmctx)( DRM_IOCTL_ARGS ) -{ - DRM_DEVICE; - drm_ctx_t ctx; - drm_queue_t *q; - drm_buf_t *buf; - - DRM_COPY_FROM_USER_IOCTL( ctx, (drm_ctx_t *)data, sizeof(ctx) ); - - DRM_DEBUG("%d\n", ctx.handle); - - if (ctx.handle >= dev->queue_count) return DRM_ERR(EINVAL); - q = dev->queuelist[ctx.handle]; - - atomic_inc(&q->use_count); - if (atomic_read(&q->use_count) == 1) { - /* No longer in use */ - atomic_dec(&q->use_count); - return DRM_ERR(EINVAL); - } - - atomic_inc(&q->finalization); /* Mark queue in finalization state */ - atomic_sub(2, &q->use_count); /* Mark queue as unused (pending - finalization) */ - - while (test_and_set_bit(0, &dev->interrupt_flag)) { - static int never; - int retcode; - retcode = tsleep(&never, PZERO|PCATCH, "never", 1); - if (retcode) - return retcode; - } - /* Remove queued buffers */ - while ((buf = DRM(waitlist_get)(&q->waitlist))) { - DRM(free_buffer)(dev, buf); - } - clear_bit(0, &dev->interrupt_flag); - - /* Wakeup blocked processes */ - wakeup( &q->block_read ); - wakeup( &q->block_write ); - DRM_WAKEUP_INT( &q->flush_queue ); - /* Finalization over. Queue is made - available when both use_count and - finalization become 0, which won't - happen until all the waiting processes - stop waiting. */ - atomic_dec(&q->finalization); - return 0; -} - -#endif /* __HAVE_CTX_BITMAP */ -- cgit v1.2.3